Putting small pics that are taken on emulator even is just silly. The difference between every generation since PS1 has been huge.
I recently played through the Tomb Raider Trilogy on ps3 and even though Legend and Anniversary looked better than on the ps2, Underworld made a HUGE difference in visuals.
Now I'm playing The Darkness (2008) on the ps3 and you can really tell that it's an early game of the generation - it looks like a cross between ps2 and ps3, with even lower resolution than games usually have on the ps3.
Deus Ex (2000) - a game that pushes the boundaries of what the video game medium is capable of to a degree unmatched to this very day.